Movable pattern for molding.



No. 653,6l4.

' Patented lul lo, I900. w. n; CADE. MOVABLE PATTERN FOR MOLDING.

(Application filed Dec. 14, 1899.)

(No Model.)

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NITED STATES ATEN'T FEICE.

WILLIAM D. cAnE, OF PI-iI ADELPHIA, PENNSYLVANIA, ASSIGNOR, BY

MEsNE ASSIGNMENTS, TO THE ENTERPRISE MANUFACTURING coM- PANY OF PENNSYLVANIA, or SAME PLAcE;

MOVABLE PATTERN FOR MOLDING;

SPECIFICATION forming at of Letters Patent No. 653,614, dated July 10, 1906. Application filed December 14, 1899- Serial No. 740,303. (No model.)

T0 on whom it may concern: I

Be it known that I, WILLIAM D. GADE, a citizen of the United States, residing in Philadelphia, Pennsylvania, have invented certain Improvements in Movable Patternsfor Molding, of which the following is a specification.

My invention relates to certain improvements in patterns for making sad-irons and like objects in which it has heretofore been necessary to use cores in their manufacture.

The object of my invention is to dispense with the use of cores; and this object I attain by making certain parts of the pattern movable. Forinstance, in certain classes of sadirons there are undercut lugs, and it has been the common practice to use core-prints in preparing the molds to cast this type of sadiron; but by the use of my invention the cores are entirely dispensed with.

In the accompanying drawings, Figure l is a transverse sectional view on the line 1 1,

Fig. 3, showing the pattern in position within the mold. Fig. 2 is a view similar to Fig. 1, showing the pattern withdrawn from the mold. Fig. 3 is a plan view of Fig. 1. Fig. A is a longitudinal sectional View on the line 4 4., Fig. 3. Fig. 5 is asectional plan view on the line 5 5, Fig. 1; and Fig. 6 is a detached perspective view of one of the slide-blocks.

The fixed bed-plate O of the molding-machine has an'opening, through which the pattern Aextends. The opening in the bed-plate conforms to the shape of the pattern, so that there will be a neat fit when the pattern is projected, as shown in Fig. 1.

Secured to the under side of the bed-plate C is a bracket B, carrying a frame B, having at its upper end a plate B forming a continuation of the bed-plate A. The pattern A in the present instance is in the form of the body portion of a detachable sad-iron, and the pattern is secured in the present instance to a plunger A. This pattern has a deep recess a, with beveled sides, and the pattern-plate of the frame B snugly fits this recess when the pattern is raised, as clearly shown in Figs. 1 and 4:.

The frame B has inclined guideways at each side for the sliding blocks D D, one mounted opposite the other and tapered as shown in the detached perspective view,-Fig. 6. These blocks move in recesses in the plate of the frame B and snugly fit against the inclined sides of the pattern A. The blocks are guided by the plate B and are held in proper position by pins 19, projecting through slots 01 in the arms d (Z of the blocks. These pins 1; limit the movement of the blocks. The arms at are slotted at (1 and projecting from the side of the pattern into the slot of each block D is a lug (1. These lugs strike the surface 6 of each block and force the blocks up into position above the surface of I the bed-plate C.

It will be noticed on referring to Fig. 2, which shows the outer pattern A and the blocks D retracted, that there is a space between the upper surface of the lug a and the surface 6 of the blocks. This allows the pattern A to first move a given distance above the base-plate C before there is any movement of the blocks D, and after the pattern A has moved a certain distance its lugs a will strike the surface 9 of the blocks and will carry them up with it to the position shown in Fig. 1. While the outer pattern A moves in a vertical direction, the pattern-blocks D move on diagonal lines, so that when they are projected as shown in Fig. 1 they form between them the undercut recess. When the sand is rammed around the mold, as indicated in Fig. 1, the outer pattern A is lowered, and as soon as this pattern descends the pattern-blocks D will follow by their own weight, as the inner inclined surface of the outer pattern A draws away from the blocks and allows them to recede by their own weight; but if for any reason they should adhere to the molded sand the lugs 00' will strike pins d on the ends of the arms (1 and the pattern A will draw the blocks down with it until they are free of the mold and will assume the position shown in Fig. 2. When both the pattern A and the pattern-blocks D are clear of the molded sand, the flask can be removed and another flask placed in position and the plunger A again raised, carrying with it the mold A. The lug a, on this mold will strike the surface e of the pattern-blocks D, and the mold A will thus carry the blocks up to the position shown in Fig. 1, when the flask can be rammed and the above operation repeated.

I claim as my invention- 1. The combination of a bed-plate having an opening, a fixed frame within the opening, an outer-pattern movably mounted within the opening, means for raising and lowering the said pattern, the frame having inclined guides, pattern blocks separate from the outer pattern arranged to slide on said guides, and means on the pattern in position to engage the blocks when the outer pattern is projected, whereby the pattern-blocks will also be projected, substantially as described.

2. The combination of a bed-plate, an opening therein, a movable outer pattern within said opening, means for raising and lowering the pattern, a fixed frame within the pattern having inclined guideways, pattern-blocks separate from the outer pattern mounted so as to slide upon the inclined ways, said blocks having undercut heads, and means on the outer pattern in position to engage the pattern-blocks when the outer pattern is moved, whereby the pattern-b1ocks will also be moved toalimited extent,substantially as described.

3. The combination of a fixed bed-plate, an opening therein, a pattern conforming to said opening, means for raising and lowering the pattern, said pattern having an inclined inner surface at each side, a fixed frame mounted within the pattern and attached to the bedp'late, recesses in each side of the frame, said frame also having inclined guides, patternblocks arranged to slide on said guides and having undercut heads conforming to the guides and to the inclined inner surface of the pattern-lugs on the pattern engaging the blocks, so that they will be raised when the pattern is projected, substantially as described.

4. The combination of a bed-plate having an opening therein, a pattern conforming to said opening, means for raising and lowering the pattern, said pattern having an inclined inner surface at each side, a fixed frame within the pattern, said frame being secured to the bed-plate, notches in theoppositc sides of the upper portion of the frame and inclined guides, pattern-blockshaving undercut heads conforming to the inclined guides and to the bevel of the inner portion of the pattern, the arms of these blocks being slotted, pins on the frame passing through the slots, and lugs on the pattern engaging with the blocks, the lugs being so arranged that there will be a certain upward movement of the pattern before the pattern-blocks are raised, substantially as described.

5. The combination of the fixed bed-plate having an opening therein, anouter pattern mounted Within the opening, means for raising and lowering said pattern, a fixed frame within the pattern and secured to the .fixed bed-plate and forming a continuation of the bed-plate, inclined guides on the frame, the upper portion of the said frame being recessed at each side, headed pattern-blocks mounted in the recesses and arranged to slideon the inclined guides, the arms of said patternblocks being slotted and having a bearingface 6 and a pin 61*, lugs projecting from the inner side of the pattern and extending into the slot between the bearing-face and thepin, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

WILLIAM D. CADE.

Witnesses:

FRANK B. JA UETT, SAMUEL J. FENNER. 

